Nelson-Wong Erika, Callaghan Jack P
School of Physical Therapy, Regis University, 3333 Regis Blvd. G-4, Denver, CO 80221, USA.
Rehabil Res Pract. 2010;2010:289278. doi: 10.1155/2010/289278. Epub 2010 Jul 18.
A major research focus is optimization of interventions for low back pain (LBP). Predisposing factors for LBP development have been previously identified. To differentiate changes in these factors with intervention, factor stability over time must be determined. Twenty-three volunteers without LBP participated in a LBP-inducing standing protocol on two separate days. Outcome measures included visual analog scale (VAS) for LBP and trunk/hip muscle coactivation patterns. Intraclass correlation coefficients (ICCs) were used to examine repeatability. Between-day repeatability of outcome measures was excellent (ICCs >0.80). Individuals were consistent in subjective LBP, with 83% reporting similar day-to-day VAS levels. Muscle co-activation patterns and LBP reports are stable measures over time for this LBP-inducing protocol. Changes in these measures following intervention can be considered to be treatment effects and are not due to natural variability. This provides support for use of this protocol in studying interventions for standing-induced LBP.
一个主要的研究重点是优化下腰痛（LBP）的干预措施。先前已经确定了导致LBP发生的诱发因素。为了区分这些因素在干预下的变化，必须确定这些因素随时间的稳定性。23名无LBP的志愿者在两个不同的日子参加了诱发LBP的站立试验。结果指标包括LBP的视觉模拟量表（VAS）和躯干/髋部肌肉共同激活模式。组内相关系数（ICC）用于检验重复性。结果指标的日间重复性极佳（ICC>0.80）。个体在主观LBP方面具有一致性，83%的人报告每日VAS水平相似。对于这种诱发LBP的试验，肌肉共同激活模式和LBP报告随时间是稳定的指标。干预后这些指标的变化可被视为治疗效果，而非自然变异性所致。这为在研究站立诱发LBP的干预措施中使用该试验提供了支持。
